chore: Merge pull request #661 from suryapratapsinghsuryavanshi/master

Added CheckFlatCase, CheckSnakeCase, CheckKebabCase methods.

String/CheckFlatCase.js

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+// CheckFlatCase method checks the given string is in flatcase or not.
+
+// Problem Source & Explanation: https://en.wikipedia.org/wiki/Naming_convention_(programming)
+
+/**
+ * CheckFlatCase method returns true if the string in flatcase, else return the false.
+ * @param {String} varname the name of the variable to check.
+ * @returns `Boolean` return true if the string is in flatcase, else return false.
+ */
+const CheckFlatCase = (varname) => {
+  // firstly, check that input is a string or not.
+  if (typeof varname !== 'string') {
+    return new TypeError('Argument is not a string.')
+  }
+
+  const pat = /^[a-z]*$/
+  return pat.test(varname)
+}
+
+module.exports = CheckFlatCase

String/CheckKebabCase.js

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+// CheckKebabCase method checks the given string is in kebab-case or not.
+
+// Problem Source & Explanation: https://en.wikipedia.org/wiki/Naming_convention_(programming)
+
+/**
+ * CheckKebabCase method returns true if the string in kebab-case, else return the false.
+ * @param {String} varName the name of the variable to check.
+ * @returns `Boolean` return true if the string is in kebab-case, else return false.
+ */
+const CheckKebabCase = (varName) => {
+  // firstly, check that input is a string or not.
+  if (typeof varName !== 'string') {
+    return new TypeError('Argument is not a string.')
+  }
+
+  const pat = /(\w+)-(\w)([\w-]*)/
+  return pat.test(varName) && !varName.includes('_')
+}
+
+module.exports = CheckKebabCase

String/CheckSnakeCase.js

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+// CheckSnakeCase method checks the given string is in snake_case or not.
+
+// Problem Source & Explanation: https://en.wikipedia.org/wiki/Naming_convention_(programming)
+
+/**
+ * CheckSnakeCase method returns true if the string in snake_case, else return the false.
+ * @param {String} varName the name of the variable to check.
+ * @returns `Boolean` return true if the string is in snake_case, else return false.
+ */
+const CheckSnakeCase = (varName) => {
+  // firstly, check that input is a string or not.
+  if (typeof varName !== 'string') {
+    return new TypeError('Argument is not a string.')
+  }
+
+  const pat = /(.*?)_([a-zA-Z])*/
+  return pat.test(varName)
+}
+
+module.exports = CheckSnakeCase